megasquirt

[CASPERAMC]

does anyone here know about megasquirt and how to wire up and tune and whatnot because ive read the megamanual a few times, and ive been reading in the megasquirt section on srtforums but i would like someone that can actually answer questions instead of sending me elsewhere and you guys seem good with that

thanks
-mike

[SuperMario]

does anyone here know about megasquirt and how to wire up and tune and whatnot because ive read the megamanual a few times, and ive been reading in the megasquirt section on srtforums but i would like someone that can actually answer questions instead of sending me elsewhere and you guys seem good with that
thanks
-mike

I may be wrong, but I heard that the mega squirt Standalone is one of the cheapest stand alones. But you have to create your own maps from scratch. No baseline maps like a Piggy back Dtec. i know there was a a guy on here running it. Cant remember his name though.

[CASPERAMC]

yea it is i pretty much know all i need to know to get it started and tune it but there are just a few wiring questions that i need to ask like if i am splicing into certain wires or cutting them completely and wiring them to the ms. also ill prob have a few spark tuning questions but for fuel i think im set...hopefully

[N2MB]

we tried getting ms fuel and spark running for a while and gave up on it because of issues with the crank code not reading correctly.we kept getting ignition break up.we got the fuel control to work but never got a grasp on spark.what are your questions?

[Vade46]

Damn..........I thought this was a Porno thread.........:cry: :D

[CASPERAMC]

well im pretty sure they got the crank code fixed so if you want to stard again its safe anyway onto the questions:

im pretty comfused about the wiring. i know there is this setup:
http://www.rs-autosport.net/catalog/docs/RSA_v3-wiring_420a.gif
which i have to follow but i am unsure if i am supposed to splice into the wire and share it, cut the wire and wire the ms to the pcm side of the wire, or the other side of the wire i cut.
-the power wire for the ms should be cut into and replace the wire going out of the pcm on C1-11?
-i think i might have to share the signal wire for the tps C2-21 and the crank pos signal C2-35
-C2-29 i think i have to cut and wire and wire to a 5v output from the ms (not sure where or what pin) and i believe it should be on the wire going away from the pcm maybe wrong though
-C3-3 and C3-37 both have to be cut and wired to ms pin 37 on the wire going away from the pcm
-C2-14 and C2-11 both have to be cut and connected to ms pins 32&33 on the wire going away from the pcm
-C2-12 and C2-13 both have to be cut and connected to ms pins 34&35 on the wire going away from the pcm
-C2-9 and C2-10 are for the ignition and i forgot which pin on the ms thsy go to but im assuming its cut those and wire in on the side away from the pcm.

i think i might be set for wiring after that. if those questions made any sense please help lol. also, i know that ms can run fuel without spark fine without the ngc decoder, but how does it know when to inject fuel if it can't read the trigger wheel?

thanks alot
-mike

[MikeGsrt]

When is it going in? i wanna be there when your tuning it... let me know

[CASPERAMC]

if it comes in this week then friday

[CASPERAMC]

anyone?

[DrEdSrT4]

i thought lance had megasquirt? aka specj.. he should know

[N2MB]

well im pretty sure they got the crank code fixed so if you want to stard again its safe anyway onto the questions:
im pretty comfused about the wiring. i know there is this setup:
http://www.rs-autosport.net/catalog/docs/RSA_v3-wiring_420a.gif
which i have to follow but i am unsure if i am supposed to splice into the wire and share it, cut the wire and wire the ms to the pcm side of the wire, or the other side of the wire i cut.
-the power wire for the ms should be cut into and replace the wire going out of the pcm on C1-11?
-i think i might have to share the signal wire for the tps C2-21 and the crank pos signal C2-35
-C2-29 i think i have to cut and wire and wire to a 5v output from the ms (not sure where or what pin) and i believe it should be on the wire going away from the pcm maybe wrong though
-C3-3 and C3-37 both have to be cut and wired to ms pin 37 on the wire going away from the pcm
-C2-14 and C2-11 both have to be cut and connected to ms pins 32&33 on the wire going away from the pcm
-C2-12 and C2-13 both have to be cut and connected to ms pins 34&35 on the wire going away from the pcm
-C2-9 and C2-10 are for the ignition and i forgot which pin on the ms thsy go to but im assuming its cut those and wire in on the side away from the pcm.
i think i might be set for wiring after that. if those questions made any sense please help lol. also, i know that ms can run fuel without spark fine without the ngc decoder, but how does it know when to inject fuel if it can't read the trigger wheel?
thanks alot
-mike
its a relatively simple diagram actually
you are going to do it like this
the main relay will be powered up off ignition source and feed the ms pin 28 via relay output.you will make a splice in that wire and put 2 5a fuses inline to the injectors.two wires total,one will feed two injectors.this will mimic your asd power to the stock injectors.
you will ground pins 7,8,9,10,11,19 to chassis ground.i highly suggest that you pay special attention to the grounds and make them good
the rest of the connections off the ms are as follows from left to right
pin 20 - will be spliced into the iat sensor output to the pcmcan be shared with the wire going to the stock pcm
pin21- will be spliced into the coolant temp sensor signalcan be shared with the wire going to the stock pcm
pin22 -will be spliced into the tps signal wire pin23 will be tapped into the stock o2 signal output signalcan be shared with the wire going to the stock pcm
pin 24 will be tapped into the crank sensor signal.can be shared with the wire going to the stock pcm
pin 31 will be your coil driver for #2 and #3do not share this with the pcm it should be wired directly from ms to the coil
pin 32-33-34-35 are your injector driversdo not share this with the pcm it should be wired directly from ms to the coil
pin 36 will be your coil driver for #1 and #4do not share this with the pcm it should be wired directly from ms to the coil
its relatively simple if you follow the diagram.good luck with it...i gave up on it and have no interest in getting to work at this point.ems works great lol..yeah it costs a bunch more but it is so worth it

if you can find connectors for the coil and injectors you can literally unplug the ms and plug the stock stuff back in if you come across a problem.

the ms will adjust spark based on crank signal.tps and crank cannot be shared because tps is a linear output and the crank sensor is hall effect.the voltage ranges are completely different,the tps is direct current and the crank sensor is alternating current.
i dont remember how it was when we were messing with it on lances car but i think the ms has its own 5v reference for tps.
you could use the factory asd circuit to supply B+ to the injectors but i would let the main relay do that and DO NOT FORGET TO PUT 5A FUSES INLINE TO THE INJECTORS ON THIS CIRCUIT.VOLTAGE SPIKES WILL BLOW THE DRIVERS IN THE MS
YOU MAY ALSO WANT TO PUT DIODES IN SERIES TO THE COIL DRIVERS TO PROTECT THEM AS WELL.

i dont know if i answered all your questions but if i didnt ask again..im not that good at answering that many questions in one post

[CASPERAMC]

you are my new hero can i hug you lol i didnt even think of adding fuses but thats a good idea. ill have to stop off tomorrow and pick some up.

would a good ground be the negative terminal of the battery because it goes to ground and its easy to check if i have a problem or should i just do it directly to the chassis

one more question, about the ngc code, how do i know that it is loaded on my megatune, and do i have to set trigger points, or is that already done for me?

thanks again
-mike

[N2MB]

you are my new hero can i hug you lol i didnt even think of adding fuses but thats a good idea. ill have to stop off tomorrow and pick some up.
one more question, about the ngc code, how do i know that it is loaded on my megatune, and do i have to set trigger points, or is that already done for me?
thanks again
-mike
lol you will know if its loaded because if its not it wont run..you will need to mechanically verify timing and set trigger points as well.

[CASPERAMC]

probably a stupid question, but how would i go about doing that

[MikeGsrt]

probably a stupid question, but how would i go about doing that


oh man... your gonna need some booze :drink:

[CASPERAMC]

well smartass do you know how?

[CASPERAMC]

ok wired up ms yesterday to just view what was going on but not control anything (crank signal, tps signal, 5 volt signal, power wire and ground to ms, sensors, and i also put the fuel pump and the asd relay to in 37 on the ms) ok yesterdayit wouldn't start. today i otit to start by splicing into the wire from the pcm (C1-11) to power the ms instead of cutting it and then attaching the wire from ms to the pcm side of the cut. then the car sounded like it wanted to start but it sounded like a dead battery. i tried again to start it and it barely cranked over and then ran. when i shut it off, the fuel pump continued to run and the pcm was humming. the only way to shut that off was the negative terminal on the battery. then i tried to run it again and it started and i ran it until it was warm then shut it off. the fuel pump shut off, but the pcm still hummed so i pulled the negative terminal. now when i try to start the car, the gauges (speedo) runs through a check and recalibrates( needle sweeps then comes back at increments) and when i put the key to start, i get a click from the starter and everything goes dead. i don't know what to do. if someone can help you will be my best friend forever. you can contact me by replying, pms, or my AIM is TWOptSL0W (the 0 in slow is a zero) AIM would be preferred.

thanks
-mike

[N2MB]

ok wired up ms yesterday to just view what was going on but not control anything (crank signal, tps signal, 5 volt signal, power wire and ground to ms, sensors, and i also put the fuel pump and the asd relay to in 37 on the ms) ok yesterdayit wouldn't start. today i otit to start by splicing into the wire from the pcm (C1-11) to power the ms instead of cutting it and then attaching the wire from ms to the pcm side of the cut. then the car sounded like it wanted to start but it sounded like a dead battery. i tried again to start it and it barely cranked over and then ran. when i shut it off, the fuel pump continued to run and the pcm was humming. the only way to shut that off was the negative terminal on the battery. then i tried to run it again and it started and i ran it until it was warm then shut it off. the fuel pump shut off, but the pcm still hummed so i pulled the negative terminal. now when i try to start the car, the gauges (speedo) runs through a check and recalibrates( needle sweeps then comes back at increments) and when i put the key to start, i get a click from the starter and everything goes dead. i don't know what to do. if someone can help you will be my best friend forever. you can contact me by replying, pms, or my AIM is TWOptSL0W (the 0 in slow is a zero) AIM would be preferred.
thanks
-mike
umm why did you splice that into ms37? you should be powering up pin 28

[CASPERAMC]

well i pulled the ms out of the car and have it running on the stock pcm so its not fried yay ill try again tomorrow

[CASPERAMC]

well heres where i am today. got the ms in and ran it off the fuel pump relay. it worked fine. got crank, tps, wideband, and clt hooked up and works. i cant get my stock iat to work, so i ordered the gm one. now heres the problem. everytime i get the ms to start up with megatune, it gets messed up as soon as i shut the car off. i cant start it up again unless i download the firmware back onto the controller and burn my msq on it again. any ideas anyone?

[N2MB]

well heres where i am today. got the ms in and ran it off the fuel pump relay. it worked fine. got crank, tps, wideband, and clt hooked up and works. i cant get my stock iat to work, so i ordered the gm one. now heres the problem. everytime i get the ms to start up with megatune, it gets messed up as soon as i shut the car off. i cant start it up again unless i download the firmware back onto the controller and burn my msq on it again. any ideas anyone?
man i wish i had an answer for that but i dont

[CASPERAMC]

haha me too

[CASPERAMC]

not sure if anyone cares but i wired the ms up today for fuel control and got it started yay

[MikeGsrt]

awesome

[MikeGsrt]

when is this project getting started up again, i wanna get this thing working so you can beat me w/ no turbo. hahaha

[CASPERAMC]

way to bring up a dead topic lol but thursday if it is nice out

[MikeGsrt]

hahaha i thought you'd like it... thursday??? im going to be at work, call me and let me know how it goes

[Sauce]

i've heard about the megasquirt a few times at my job, i know one guy's gettin it for his 89 supra, let me know how it runs with the SRT4

[MikeGsrt]

i've heard about the megasquirt a few times at my job, i know one guy's gettin it for his 89 supra, let me know how it runs with the SRT4

its going into a neon 2.0l

[Sauce]

oohh...........

[CASPERAMC]

dont hate lol, but people have it running fine on srts.

[CASPERAMC]

anyone live near old bridge that wants to come over and help me lol im running out of hair to pull out

[mr_eh]

as if anyone is capable of helping you

[CASPERAMC]

haha theres no hope

[mr_eh]

haha theres no hope

...gasoline, lighter... problem solved, sorry holmes.

[MikeGsrt]

...gasoline, lighter... problem solved, sorry holmes.


x2...

[CASPERAMC]

x2...
dont be mad becasue you have a tiny penis

[R&C_RallySRT-4]

Damn..........I thought this was a Porno thread.........:cry: :D

Yea me too, I almost started to write about how I get my wife to megasquirt! Nevermind thoough, if I buy a SRT-4 and go to a meet no one mention this post :rofl: